A new error has arisen due to the new Editor. The <option> tag will automatically get completely stripped by the new Editor! This is because it conflicts with the existing html <option> tag which is not allowed to exist outside of forms 🙁
For the time being please do NOT load any references into the Editor that may have an <option> tag in it, or attempt to encode an <option> tag into the editor it will only leave you frustrated and annoyed.
The plan is to rename the option tag something else, and execute a major substitution on all references in the databse to the new tagname. This may take some time to do.